                                        m/OpenIOCSpecification)]
 
     ;; Extension fields:
-    (s/optional-key :expires) Time
+    (s/optional-key :expires) m/Time
     :producer s/Str
 
     ;; Not provided: handling

    (s/optional-key :source) m/Source
    (s/optional-key :security_compromise) m/SecurityCompromise
    (s/optional-key :discovery_method) m/DiscoveryMethod
    (s/optional-key :coa_requested) [m/COARequested]
    (s/optional-key :coa_taken) [m/COARequested]
    (s/optional-key :contact) m/Source
    (s/optional-key :history) m/History


   m/RelatedWrapper
   {:exploit_target  ExploitTargetReference}))

(s/defschema RelatedExploitTargets
  "See http://stixproject.github.io/data-model/1.2/ttp/ExploitTargetsType/"
  {(s/optional-key :scope) m/Scope
   :exploit_targets [RelatedExploitTarget]})
